9/21/2023 0 Comments Breakaway switch wiring![]() For lots more information on braking systems and towing, cruise on to the next page. The breakaway switch, also known as a plunger, is connected to the hitch - when the trailer separates from the tow vehicle, the switch immediately sends a signal to the trailer's brakes to slow down and safely stop the vehicle.ĭon't stop now. Then the wires from the breakaway switch are spliced to the trailer's brake wires. The wires from the battery connect to the breakaway switch, providing the necessary power. The process involves cutting and splicing several wires together, so unless you're experienced with electrical wiring you might want to leave this step to someone trained in breakaway kit installation. The next step, properly wiring the breakaway system, may be best handled by a professional. Be sure that the switch wiring will reach the trailer hitch, as the disconnection of the trailer hitch is what triggers the breakaway switch. Again, you can mount it nearly anywhere on the trailer, but it's best to keep it away from any space that might be damaged by dragging or debris. Mounting the breakaway switch is just as easy. Also, if a kit comes with a rechargeable battery instead of a non-rechargeable battery, the price will most likely be higher however, these are usually a better deal, since you won't have to keep replacing expensive batteries or buy a separate charger. As a rule of thumb, the more universal a breakaway kit is, the more expensive it will be. One breakaway kit might be designed for single- and tandem-axle trailers, while another might work with single-, tandem- and tri-axle trailers. Why such a broad price range? First, not all breakaway kits work with every kind of towing setup. ![]() Depending on the type of trailer, drivers can mount breakaway kits almost anywhere on their trailer, on the frame or even inside.īased on the type of kit, prices can vary - breakaway kits usually cost between $10 and $40, and some can cost as much as $70. They typically weigh between 3 and 8 pounds (1.4 to 3.6 kilograms) and measure about 5 or 6 inches (12.7 to 15.2 centimeters) in height, width and depth, about the size of a thick textbook. What does a breakaway cable do In the event of a trailer becoming unhitched while the vehicle and trailer are in motion, the trailer brake will be applied to allow the trailer to come to a halt just before the cable snaps and the trailer separates completely from the towing vehicle, thus allowing the tow vehicle to continue. The steps for wiring a trailer brake are relatively simple and can be completed with basic tools. For a gooseneck trailer, you will need at least a 10-gauge wire for the brakes. All you would have to do to reset the system is put the pin back into the switch. Once pulled out it allows the 2 pieces of metal to touch completing the circuit between the breakaway battery and the trailer brakes. The setup of the trailer determines the gauge of the trailer brake wire. The way that a breakaway switch such as HM20010 works is that the pin inside holds two pieces of metal apart. They include a plastic bin for a sealed battery, the breakaway switch and proper wiring. The trailer brake wire is measured in gauge and depends on the trailer setup. Without seeing the instructions from Bowtie Overdrives I can't say for sure which side they mean.Fortunately for consumers, most breakaway kits are pretty similar across the board. One side of the brake light switch has battery voltage on it all the time while the other side has battery voltage only when the brake pedal is pressed, as Ogre's pic shows. I'm not familiar with your Bowtie Overdrives kit. I got rid of the original rod and pulleys and got new cables from Control Cables. Is that one of the turn signal wires Ogre is talking about? The harness also has a third brake light wire that I wasn't going to use, could that be used? Thanks again for all the advise. ![]() The diagram has a wire from the relay tapping into "existing brake circuit". I am using a 700r4 and got the lockup kit from Bowtie Overdrives. I have thought of another issue that involves the brake wiring. Looks like your setup is what I'm shooting for, is that cleves your e-brake? (did the same thing). ![]()
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